I don't have Minerva, unfortunately.
I was thinking a +spd Cherche with Brave Axe+ and Triangle Adept 2 (I'm not killing Roy, man). My reasoning is that while +atk Brave Axe+ Cherche with Death Blow kills almost everything, that assumes she's operating in a vacuum, and not as part of a team.
In a Flier Emblem team, I don't need a cannon who can brute force everyone through type disadvantages because I have units of other colors to kill reds and greens. Instead, I need Cherche to fill a few key functions as the only green unit on my team:
- ORKO blues, especially strong ones like Effie and Nowi
- Tank and kill blue mages like Reinhardt and Linde
I felt that Triangle Adept worked best for that because it lets me keep Cherche's naturally high attack while letting her tank strong blue magic despite low res, and it only costs the A skill slot. She won't hit as hard as Deathblow +atk Cherche, but she'll still hit hard enough to take out those key threats, and she'll be more durable too, thanks to TA and +spd nature. I think it adds up to a package that has a lot more utility in my team.
She'll still be played primarily to be useful during player phase, but I still need her to be able to take a blue magic hit now and then to bait blue mages.
If you're gonna go that route, you might as well get +Res over speed. It's not like that 3 speed will matter if you're up against stuff like Linde.